package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }
//        e10adc3949ba59abbe56e057f20f883e
        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void empADD(EmployeeDTO kk) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(kk,employee);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);

        employeeMapper.empADD(employee);
    }

    @Override
    public Employee empById(Long id) {
        return employeeMapper.empById(id);
    }

    @Override
    public PageResult empsByPage(EmployeePageQueryDTO kk) {
        int pageIndex = kk.getPage();
        int pageSize = kk.getPageSize();

        PageHelper.startPage(pageIndex,pageSize);
        Page<Employee> pemp = employeeMapper.empsByPage(kk);//直接写一个select *的获得一个Page<Employee>

        long total = pemp.getTotal();
        List<Employee> emps = pemp.getResult();//获得total和Employee的List

        return new PageResult(total,emps);
    }

    @Override
    public void empStatus(Integer status, Long id) {
        Employee ee =  Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.empStatus(ee);
    }

    @Override
    public void empEdit(EmployeeDTO ee) {
        Employee kk = new Employee();
        BeanUtils.copyProperties(ee,kk);
        //TODO
        kk.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.empEdit(kk);
    }

}
